/Engine/Source/Runtime/Engine/Classes/Kismet/BlueprintMapLibrary.h
Removes a key and its associated value from the map.
True if an item was removed (False indicates nothing in the map uses the provided key)
static bool Map_Remove ( const [TMap](API\Runtime\Core\Containers\TMap)< int32, int32 > & TargetMap, const int32 & Key )